.setcpu "6502"
zzz      =       $103b

         .org    $0000
         .word   $1000

         .org    $1000
begin:   bit     begin
         nop
         nop
         nop
         jmp     part2

         .org    $2000
part2:   bit     part2
         nop
         lda     @local1
         lda     local2
         lda     local4
         nop
         nop
         nop
         bit     b4_part3
         jmp     part3

@local1: .byte   $81
local2:  .byte   $82

b4_part3:
         .org    $3000
part3:   bit     part3
         nop
         lda     local2
         lda     @local3
         lda     local4
         nop
         nop
         nop
         bit     _b4_part4
         jmp     part4

@local3: .byte   $83
local4:  .byte   $84

         .org    $4000
b4_part4a:
         .org    $5000
_b4_part4:
         .org    $6000
part4:   bit     part4
         bit     _b4_part4
         nop
         nop
         nop
         jmp     part4a

         .org    $500c
part4a:  bit     part4a
         bit     b4_part4a
         jsr     part4b
         .org    $4015
         .byte   $00

part4b:  bit     part4b
         bit     zzz
         jmp     @LF000

         .org    $f000
@LF000:  nop
         bne     $f003
         .org    $0000
         .byte   $ea
         .byte   $00